Granite is composed of volcanic lava under considerable pressure under the molten state of uplift to the earth's crust surface, magma would spit out the ground, and in the ground slowly cooling solidification after the formation of the tectonite, is a kind of deep into acidic igneous rocks, belong to magmatic rocks (volcanic rock). Granite is the main component of quartz, feldspar and mica. The content of feldspar is 40%-60 %, quartz content is 20%-40 %, its color depends on the type and quantity of composition. The rock is hard and dense.
Granite is formed from igneous rock, which is a kind of steel hard lens stone, originally formed by feldspar and quartz, and mixed with one or more black minerals, which are arranged in a flat structure.
Granite is the main component of quartz, feldspar and mica. The content of feldspar is 40%-60 %, quartz content is 20%-40 %, its color depends on the type and quantity of composition. Granite is the rock of the whole crystal structure, the fine granite grain fine and uniform, the structure is close, the quartz content is much, the feldspar luster is bright.
The silica content of granite is high and belongs to acid rock. Some granite contains traces of radioactive elements that should be avoided indoors. The granite structure is compact, hard, acid and alkali resistant, good weather resistance, and can be used in the outdoor long term.
Granite is a unique material, the physical characteristics of the main performance is as follows Porosity/permeability: granite physical permeability is almost negligible, between 0.2% and 4% thermal stability: the heat stability of the granite has high strength, it will not change because of the change of ambient temperature, granite because of its high density and won't change due to the change of the temperature and air composition.
Granite has a strong corrosion resistance, so it's widely used in the reserves of chemical corrosion product on the ductility: granite range extension coefficient of 4.7 x10-6-9.0 x10-6 inch inch (x). Color: the color of the granite and the hardness of materials are highly consistent: granite is the most hard materials, also because of its superior hardness and make it have good wear resistance.
Composition: granite is mainly composed of quartz and orthofeldspar and microcline. The most primitive granite is mainly composed of the following three parts: feldspar quartz black mica. The proportion of each component is generally determined by color and material, but generally the proportion of feldspar is 65%-90% quartz 10%-60% black mica 10%-15%
Granite often contains other minerals, such as amphibolite and mica, and presents various colors, including: brown, green, red and common black. Because it crystallizes slowly, its crystals are intertwined, like rubik's cube,
So it's hard. It is as durable as a house, not dropping crumbs, not scratchable, and not afraid of high temperatures. Regardless of color or light, as long as there are some common sense of conservation, it will not fade or fade. He was almost free of pollution, with high gloss on the surface of the polished finish, and the impurities of all kinds of weather that could hardly be adhered to.
The mining of granite is usually made of wire rope sawing. There are new techniques such as intensive row eye and flame jet. The stone cutting by flame spray method is neat and neat, and the production efficiency is high. The stones that have been collected are called waste materials after coarse, and then made by artificial drilling holes or machine saws, the required size of pieces and plates are made. To be made of a cylindrical or arcuate with a milling machine or rotary bed; In the end, it is used to cut thick, fine grained, or grind, polish and polish the surface. Granite does not pollute the environment. Synthetic materials are often associated with bad, even poisonous, by-products and need to be replaced several times during the construction period (every time there is a problem). Granite does not need to be replaced because it is very durable.